Noise reduction and shock absorption device of concrete stirrer

Abstract

The utility model discloses a noise reduction and shock absorption device of a concrete mixer, which comprises a pre-buried plate and a bottom plate, the bottom plate is positioned on the upper side of the pre-buried plate, a cushion pad is additionally arranged between the bottom plate and the pre-buried plate, and the upper side and the lower side of the cushion pad are integrally bonded with the bottom plate and the pre-buried plate; hydraulic dampers are installed at the four corners of the bottom plate, and a sliding rod is installed in the center of the bottom plate. Piston rods of the hydraulic dampers are connected to a sliding sleeve in the center through a connecting arm, the sliding sleeve slides along the sliding rod, and a plurality of bearings are installed between the sliding rod and the sliding sleeve in a scattered mode and used for supporting relative vertical sliding. The hydraulic damper is used for reducing downward transmission of vibration, and the sliding sleeve and the sliding rod are used for limiting balance of equipment on the horizontal plane, so that torque of the piston rod is transmitted through the connecting arm and then counteracted by the sliding sleeve and the sliding rod, deflection force between the cylinder body of the hydraulic damper and the piston rod can be reduced, and the service life of the hydraulic damper is prolonged. Operation friction is reduced, so that the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of construction devices, in particular to a kind of noise reduction damping device of concrete mixer. BACKGROUND

[0002] Concrete mixer can produce relatively large vibration when working, these vibrations are transmitted downward and can produce relatively large noise, currently, spring shock absorber is mainly used to reduce vibration, but spring shock absorber will be fatigue after a period of use, which affects the damping effect.

[0003] Hydraulic damper will not be fatigue, but there is a problem, although hydraulic damper can effectively maintain the horizontal operation of the equipment, the vibration of concrete mixer is multidirectional, the horizontal movement trend is forced to balance by the cylinder and piston rod of hydraulic damper, the friction is very large, and repeated torque is easy to cause wear, which further affects the sealing of hydraulic damper. SUMMARY

[0004] The utility model provides a kind of noise reduction damping device of concrete mixer to solve the technical problems in the above background.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] A kind of noise reduction damping device of concrete mixer, including embedded plate and bottom plate, bottom plate is located on the upper side of embedded plate, buffer pad is installed between bottom plate and embedded plate, and the upper and lower sides of buffer pad are integrally bonded with bottom plate and embedded plate;Hydraulic damper is installed at the four corners of bottom plate, and sliding rod is installed at the center;The piston rod of hydraulic damper is connected to the sliding sleeve at the center by connecting arm, the sliding sleeve slides along the sliding rod, and a plurality of bearings are installed between the sliding rod and the sliding sleeve to support the opposite vertical sliding.

[0007] Further, the cross section of the sliding rod is a regular polygon, has a plurality of edge faces, and a sliding groove is formed in each edge face;A through groove is vertically formed in the inner side of the sliding sleeve corresponding to the position of the sliding groove, a plurality of bearings are vertically and spaced apart installed in the through groove, and the front end of the bearing is embedded in the sliding groove and rolls.

[0008] Further, the cross section of the sliding rod is a regular quadrilateral or a regular hexagon.

[0009] Further, the top end of the piston rod of the hydraulic damper is welded with a mounting plate having a plurality of bolt holes.

[0010] Further, a dust cover is installed at the top end of the sliding rod by bolts.

[0011] Further, the buffer pad adopts rubber pad, the limit buckle B is arranged downwards on the peripheral wall of the bottom plate, the limit buckle A is arranged upwards on the peripheral wall of the embedded plate, and the limit buckle A and the limit buckle B are used for buckling part of the peripheral wall of the rubber pad for transmitting horizontal stress.

[0012] The utility model discloses the advantages are:

[0013] The utility model discloses a hydraulic damper is used for reducing vibration downward transmission, and on this basis, the mechanism for balance is added, utilizes the sliding sleeve and slide bar to limit the balance of equipment on the horizontal plane, makes the torque of piston rod pass through connecting arm transmission, then offsets by the sliding sleeve and slide bar, can reduce the deflection force between the cylinder body and piston rod of hydraulic damper in this way, reduces the running friction, thereby increases the service life, utilizes the rubber pad of bottom further buffering, greatly reduces the noise and vibration. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the front view structural schematic diagram of the utility model;

[0015] Figure 2 It is the three-dimensional schematic diagram of the utility model;

[0016] Figure 3 It is Figure 2 The partial A amplification schematic diagram in.

[0017] In the drawing, 1-embedded plate, 11-limit buckle A, 2-buffer pad, 3-bottom plate, 31-limit buckle B, 4-hydraulic damper, 41-piston rod, 5-mounting plate, 6-connecting arm, 7-slide bar, 71-sliding slot, 72-dust cover, 8-sliding sleeve, 81-tunnel, 82-bearing. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model will be further explained in combination with the drawings. It needs to be explained here that the explanation of these implementation modes is used to help understanding the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each implementation of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] As shown in the figure:

[0020] The application discloses a noise reduction and shock absorption device of a concrete mixer, which comprises a pre-embedded plate 1 and a bottom plate 3, the bottom plate 3 is arranged on the upside of the pre-embedded plate 1, a buffer pad 2 is arranged between the bottom plate 3 and the pre-embedded plate 1, and the buffer pad 2 is integrally bonded with the bottom plate 3 and the pre-embedded plate 1 on the upside and the downside, hydraulic dampers 4 are arranged at the four corners of the bottom plate 3, and a sliding rod 7 is arranged at the center of the bottom plate 3, the piston rods 41 of the hydraulic dampers 4 are connected to the center sliding sleeve 8 through connecting arms 6, the sliding sleeve 8 slides along the sliding rod 7, and a plurality of bearings 82 are arranged between the sliding rod 7 and the sliding sleeve 8 for supporting the opposite vertical sliding.

[0021] The hydraulic dampers 4 are used for reducing the downward transmission of vibration, so that the generation of large vibration and noise is avoided, the hydraulic dampers 4 have the advantage of not generating fatigue compared with spring shock absorption, the mechanism for balance is additionally arranged on the basis, the sliding sleeve 8 and the sliding rod 7 are used for limiting the balance of the equipment on the horizontal plane, the torque of the piston rod 41 is transmitted through the connecting arm 6, and then is offset by the sliding sleeve 8 and the sliding rod 7, so that the deflection force between the cylinder body of the hydraulic damper 4 and the piston rod 41 is reduced, the running friction is reduced, the service life is prolonged, the rubber pad at the bottom is further used for buffering, and the noise and vibration are greatly reduced.

[0022] As an optimized scheme, the sliding rod 7 is a regular polygon in section and has a plurality of edge faces, a regular quadrilateral or a regular hexagon is generally recommended, and a sliding groove 71 is formed in each edge face; a through groove 81 is vertically formed in the inner side of the sliding sleeve 8 and corresponds to the position of the sliding groove 71, a plurality of bearings 82 are vertically and spaced apart arranged in the through groove 81, and the front ends of the bearings 82 are embedded in the sliding groove 71 and roll, so that the resistance during upward sliding is reduced and the abrasion is reduced, and in order to avoid dust and the like from entering the sliding groove 71, a dust cover 72 is arranged at the top end of the sliding rod 7 through bolts.

[0023] In order to conveniently install the concrete mixer at the top end, the piston rod 41 of the hydraulic damper 4 is welded with a mounting plate 5 provided with a plurality of bolt holes at the top end.

[0024] As an optimized scheme, the buffer pad 2 is a rubber pad, a limiting buckle B31 is arranged on the circumferential wall of the bottom plate 3 downwards, a limiting buckle A11 is arranged on the circumferential wall of the pre-embedded plate 1 upwards, and the limiting buckle A11 and the limiting buckle B31 are used for buckling part of the circumferential wall of the rubber pad for transmitting horizontal stress. Because the buffer pad 2 is integrally bonded with the bottom plate 3 and the pre-embedded plate on the upside and the downside to avoid the generation of gaps during vibration, the limiting buckle A11 and the limiting buckle B31 are used for transmitting the force in the horizontal direction, so that the tearing of the glued surface of the buffer pad 2 is reduced.

[0025] The embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and still fall within the protection scope of the present application.

Claims

1. A noise reducing and vibration dampening device for a concrete mixer, comprising: Including pre-embedded plate and bottom plate, bottom plate is located pre-embedded plate upside, install buffer pad between bottom plate and pre-embedded plate, and buffer pad upside and downside are bonded with bottom plate and pre-embedded plate as a whole;The four corners of the bottom plate are provided with hydraulic dampers, and a sliding rod is installed at the center of the bottom plate;The piston rods of the hydraulic dampers are connected to the center sliding sleeve through connecting arms, the sliding sleeve slides along the sliding rod, and a plurality of bearings are installed between the sliding rod and the sliding sleeve to support the opposite vertical sliding.

2. The noise reducing and dampening apparatus for a concrete mixer of claim 1, wherein: The cross section of the sliding rod is a regular polygon, has a plurality of edge surfaces, and a sliding groove is formed on each edge surface;A through groove is vertically formed on the inner side of the sliding sleeve corresponding to the position of the sliding groove, a plurality of bearings are vertically and spaced apart installed in the through groove, and the front ends of the bearings are embedded in the sliding groove and roll.

3. The noise reducing and dampening apparatus for a concrete mixer of claim 2, wherein: The cross section of the sliding rod is a regular quadrilateral or a regular hexagon.

4. The noise reducing and dampening apparatus for a concrete mixer of claim 2, wherein: The top end of the piston rod of the hydraulic damper is welded with a mounting plate with a plurality of bolt holes.

5. The noise reducing and dampening apparatus for a concrete mixer of claim 2, wherein: The top end of the sliding rod is provided with a dust cover through bolts.

6. The noise reducing and dampening apparatus for a concrete mixer of claim 2, wherein: The buffer pad is made of rubber pad, the limit buckle B is arranged on the peripheral wall of the bottom plate downward, the limit buckle A is arranged on the peripheral wall of the pre-embedded plate upward, and the limit buckle A and the limit buckle B are used to buckle part of the peripheral wall of the rubber pad to transmit horizontal stress.

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